Spice Jet Airlines — Not refunded my amount since 4 months

The most fraud airlines ever seen they need to refund my amount since 4 months. Still they have not given any resolution when they are refunding. They are not even responding my email as well as they are not picking my calls. This is case of customer harrassment and i will not accept this. You spicejet what the hell you think you are don't you have shame left and not think it's someone else money which should be refund. I want clear clarity and call response that when i will get my refund.